无人机航测技术在入海排污口排查中的应用

近年来，海洋环境污染日益严重，治污迫在眉睫。入海排污口排查是治污第一要务，但排污口数量多、分布广、形态各异、隐蔽性强，常规排查异常艰难，投入大、周期长、遗漏多。无人机航测技术能快速获取高分辨率真彩色影像和热红外影像。彩色影像色彩鲜明、清晰可读，能直接判读裸露排污口；热红外对温度敏感，穿透力强，通过温度的异常可识别隐蔽目标。本文两种影像的结合能高效搜索到排污源头，是排查工作开展以来一次重大的技术突破，将为海洋治污工作的顺利开展提供强大的技术保障和支撑。

Application of UAV aerial survey technology in sewage outlet investigation

In recent years, the marine environment pollution is increasingly serious, pollution control is imminent. Investigation of sewage discharge outlets entering the sea is the first priority of pollution control. However, due to the large number of sewage discharge outlets, wide distribution, different shapes and strong concealment, conventional investigation is extremely difficult, with large investment, long cycle and many omissions. UAV aerial survey technology can quickly acquire high-resolution true color images and thermal infrared images. The color image is bright and legible, and can be directly interpreted as exposed sewage outlet. Thermal infrared is sensitive to temperature and has strong penetrability. It can identify hidden objects through temperature anomalies. The combination of the two images can effectively search the source of pollution discharge. It is a major technical breakthrough since the investigation began, and it will provide a strong technical guarantee and support for the smooth development of Marine pollution control.